got a really nasty sound when backing off

[timoth]

right have just had the cam belt done and test drove the car only to find that when you back off it sonunds as though a bag of nails have been chucked in the head. the car dosen't seem to go as well either, the timing seems fine it starts the second you turn the key and revs up fine. with the boot up the sound seems to be coming from the inlet manifold/injector area as apposed to inside the engine. please please help as really can't afford to have anything else go wrong as just spent £400 on a larini clubsport as the original was on its last legs(havent got it yet so test drive was still on original.

[TIPPER]

The K series engines cars all make a nasty rattly type noise on the overrun but that's the gearbox. If you've just paid to have the belt done I'd take it back pronto.

[timoth]

the prob i have is i was trying to do it on a shoe string and so the guy over the road (with my help) did it but is away for the weekend so can't see him till next week. the noise is there if you just rev it at stand still so no other (normal) noises are present and it deffo did not make that noise before. the rear clam was taken off could this have been refitted slightly different???

[TIPPER]

Dunno I'm afraid Tim. Try putting a post on Seloc technical after the weekend. I hate to say this but would the £400 on the Larini have not been better spent on getting the existing set-up right? I want some nice new wheels for my car and will have a bit spare this month (well the kids haven't got at it yet!) but I'm replacing tyres,upgrading brakes and putting the balance towards new suspension. When all thats done I can justify the cosmetic upgrade.
Hope you get it sorted soonest.

[timoth]

tipper mate unfortunatly taking the clam off (Which holds the silancer on) caused an all ready very corroded exhaust to break and so the larini was needed and although it is a welcome upgrade (with a lifetime warranty) it was still almost half the price of a standard lotus 1 (£582 + VAT)which it seems (from other posts i have read)have a life span of about 5-6 years. so the larini was the most logical choice, i prob could have got a second hand 1 but felt that i would be in the same boat in the near future and so bit the bullet.

[timoth]

hi guys i am really getting fed up now we have rechecked the timing and found that it was a tooth out on the crank so after sorting that out the prob seems to be worse the tick over is uneven(not quite lumpy but not smooth either if you know what i mean) it hesitates when you rev it and the horrible rattle is still there as befor. i have driven it a few hundred yards and it seems to have no go in it. we have spent hours looking and prodding trying to find out if something is loose/not connected but cant find anything. the rattle is not affected if you disconnect the air filter or remove the oil filler cap (obviously only for a second or 2 so as to find out what is causing the noise but it diddent get louder or quiter).can any body help. could it be a duff sensor on even the ecu

On a more positive note fitted the clubsport last night

[S Works]

Post in the SELOC technical forums. If it's all rattling and the timing's out, perhaps you can hear valves or the hydraulic followers or something.

I'd suggest not running it for sustained periods or driving it if you're not sure. Be prepared to get it taken to someone who knows what they're doing to fix it, and get the credit card ready just in case.

Where are you?
Who's your local specialist?

[tangerine_sedge]

It's not something like the Cat disintegrating is it? I've had a couple go on different cars, they sound like someones put a handful of gravel in the exhaust, and I found that the cars had reduced power... Just a suggestion from left-field, considering what you said about changing the exhaust....

[timoth]

right feel really stupid i picked up the car this avo and the guy in the garage said that the timing was well out (see my last reply). turns out that we were using some marks on the cover but they had sod all to do with the timing. it was 5-6 teeth out on the crank amazingly did no damage. so all in it cost me another £100 but all is well again and back . got to say the zorst is awsome
bye bye horrible engine wine HELLO lovly deep exhaust burble. got to say a big thanks to Yvo Tuk at www.elise-shop.com for his sound advise and quick delivery thanks mate.

[shangani]

How do they know it didn't do any damage?

[timoth]

the only true way would be to take the head off and see but is running spot on and so can only assume all is ok. i suppose only time will tell. went to work in it today (50 mile round trip) and she diddent miss a beat.

[TIPPER]

Glad you're sorted Tim and that Larini is good 'n Burblelini.

[bobcorb]

Glad to hear you sorted it. It must have been a horrible experience. In future - if in doubt ASK!

I'd recommend getting the workshop manual off Ebay, it has the Rover engine manual incorporated and is very educational.

I've often wondered what the other marks are for...

[bobcorb]

Oh yeah, you should be able to double confirm that there's no damage by getting a compression check done (only a few minutes work) but given that its now driving sweetly I'm sure it'll be fine.

[timoth]

cheers guys have lernt a lesson, trying to save money on thing like the c/b is a no no and has prob cost me more than if i had gon to a garage in the first place and i would have saved myself(and the wife) a lot of worry.